abstract |
[PROBLEMS] To provide an oligomeric ester having high safety, excellent solubility in water, dispersibility, and good lubricity, and an aqueous / water-soluble lubricating composition having good safety, lubricity and cooling properties containing these oligomeric esters. And a cosmetic or skin external preparation containing the oligomer ester and a sticky feeling suppressed. An oligomer ester synthesized from the following components (A) and (B) is used. (A) One or more divalent carboxylic acids containing a straight chain, branched chain, or cyclic structure having 2 to 36 carbon atoms. (B) One or more polyglycerols having an average degree of polymerization calculated from the hydroxyl value of 2 to 15, and glycerol. [Selection figure] None |